Viewing archive of Sunday, 11 March 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Mar 11 1234 UTC

SIDC Forecast

Valid from 1230 UTC, 11 Mar 2018 until 13 Mar 2018
Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

10cm fluxAp
11 Mar 2018068029
12 Mar 2018068011
13 Mar 2018068007

Bulletin

Solar X ray flux remained below B level and with no spotted regions on the visible disk chances for any flare occurrences remain very low.

No new Earth directed CMEs have been observed in coronagraph data.

Proton flux levels were at background values and are expected to remain so.

Solar wind showed until around midnight the continued passage of the magnetic cloud leaving the Sun on March 6. While Bz became positive and the magnetic field phi angle showed a further gentle rotation of the magnetic field, Solar wind speed declined to a minimum of 370 km/s by midnight. After midnight, Solar wind increased again to 450 km/s presently, while total magnetic field steadily recovered to a nominal 3nT with Bz variable and the magnetic field phi angle again stable in the positive sector. Further Solar wind perturbations may be encountered in the next 24 hours, with also possibly the arrival of the ejecta of March 7. Afterwards, Solar wind conditions should slowly return to nominal with later the influence of the high speed stream of the elongated coronal hole expected from March 14 onwards.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-3). Geomagnetic conditions could still see active periods associated to a possible weak CME arrival, but should mainly be quiet to unsettled from March 12 onwards.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 10 Mar 2018

Wolf number Catania///
10cm solar flux068
AK Chambon La Forêt012
AK Wingst012
Estimated Ap013
Estimated international sunspot number000 - Based on 19 stations

Noticeable events summary

DayBeginMaxEndLocStrengthOP10cmCatania/NOAARadio burst types
None

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

All times in UTC

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